Improvement in double-gripping- kianged drums, ftoiieys, and wheels



4 4 y W. KELSBY. `DUBLE GRIPING FLANGED DRUM, PULLEY- AND WHEEL.

as 'iction-gearing.

aum-t eine pew and.

' WILLIAM Kun-snr, OF LONDON, AENGLAND, Assre'NoR FOR -ONE-nknrinrs RIGHT 'ro Heuerv AUeosTnsoLAnK, on BOSTON, MAssAoHUsnTTs.

Letters Patent IVe-105,341, dated Juli/12, 1870.

IMPnOvsMnNT mucosas-Garenne'FLANGED DRUMS, P-ULLEYS, AND-WHEELS.

The Schedule xeferredto'ln these Letters Patent and making pai-t of the same Bc it known that I, WILLIAM KELsuY, of 118 Cannon street, London, in the county ot' Middlesex,

England, have invented certain Improvements in Drivh ing-Drums, Pulleys,= and Wheels; and I"do hereby declare that the following is a full, clear, and exact description thereof', which will enable others skilled in mechanism tomake and use the same, reference being had to the accompanying drawing forming part of' this specification, in which- Figure l is a side. elevation, and

, ligu re.2, a vertical section ot' the driving-drum or pullcy,havlng two loose flanges or disks, with wedgesliaped.ring.bct\v ecn theln.

' Il igure 3 is a section ota driving-drum or pulley having only one loose flange or dis Figure 4 is a4 section ot' a driving-drinn, pulley, or, wlieel,

showing 'the ring or wheel keyed to the shalt or axle, and having loose llanges or disks mounted upon the boss.-

Figure 5 is a section ot'l a driving-drum, pulley, or wheel, having an internal wedge-shaped ring east'npon one of the flanges, the other llange being securely keyed to thesha'tt.

Figure 6 shows application ofdruin,'pulley, or wheel,

Ihe invention drums, pulleys, or wheels, in such a manner or form that the pull upon theropc or band, or. pressure of au external pulley or wheel, or the weight of a Abar, rod,v

rail, engine, or car, shallcause the rope or band, external pulley' or wheel, or bar, rod, or rail, to be gripped by the tlangcs or disks of' thc-said drum, pulley, or wheel.

In the accompanying drawing A represents a driving-shaft or axle, B, a driving boss, which may be made of' an octago nal shape, as shown, or of any'other form, so long as theobjcct oi' driving round the two anges or disks of the, drum, pulley, or wheel, is obtained. i

C 0 are two `flanges or 'disks mounted upon the driving boss B, and are kept ill/position by means of f two hoops cast upon the ends ot' the said boss.

These. flanges or disks have a recess, D D, formed on the inner face of each,-which recess, when thev two laces of thc said llanges or disks are brought together,

forms an angular space, as shown in ligpfl. i.

ployed. In somecases these drums, pulleys, orwhecls,

may be' so eonstrl'lctedas todispcnse with the drivmg-boss B, in place of which one or more keys may be usciksuh kcys being lirinlyhcdd'ed intol and secured consists ot' constructing driving# to 't-lie-drii-'ing-shait. The top face of `the keys would be flat, but each side would be curved, to allow oi' thc Vinclination of thc flanges or disks, as hereinafter described. The -flanges or 'disks would be mounted directly upon the drivingeshaft, the 'center holeszbeng bored out to lit the shaft, butof the same form, as shown in fig.,2. Two hoops would be secured tothe driving-'shalt outside -the flanges or disk, so as to re tain them in their proper position.

Although I prefer to construct my drums, pulleys, or wheels, in the form above described, and illustrated in figs. 1 and 2,

.or l

Secoudlyg I'may make the drum, pulley, or wheel,

as shown in Iigl 4. This modilication is specially ap'- plicable to the driving-wheels of locomotive steam-enines for ascendin stee inclines and'where a side g 7 i grip on Vthe rail, in addition to the usual adhesion, would-be an advantage. 'Forthis purpose I form the wedge-shaped ring E E into the body of the' wheel, and secure it firmly to the vshaft or axle A.' On the boss B of this ring or wheel I mount the two loose llanges or disks 0.0,the center holcsiu which are -bored somewhat larger iu diameter, to allow for the descent of the llanges or disks upon the body' of the 'wheeli The cone or wedge-shape of the ring or wheel is reversed in this ease. I also form or secure upon the periphery of the loose flanges or-disks tires, ot' the .usual shape, butplaccd in a reverse position to each tires maygrip the other, sot-hat the flanges of the rail G between them. The two flanges or disks are kept in position by means of hoops shrunk upon each end of the boss of the ring or wheel; or,

Thirdly, I may make the drum, pulley, orwhe'el, as

. shown u'fg. one of theilanges or disks (l C having the wedge-shaped ring E E firmly attached thereto, or east thereon, thus together forming the body of the drum, pulley, or wheel, the other llange or disk C .O being loose upon. the boss, and having the same action as shown in ligv; or,

. Fourthly, I'may` make the drum, pulley, or wlieel,'as

shown iuig. 6, where it is made available as a friction-gearing. The drum or pulley is constructed as shown, also, iu gs. 1 and 2, butin place 'of a "rope I insert the wedge-formed tire of the wheel F, allowing the said point to'press up the wedge-ring E E or llaugcs of the pulley. The rim of the wheel Fw'ould be preferably made of au angular form, as shown, so that the point of the wheel 1 might press fairly upon 'et there are other modifications which .would not depart lioiu the spirit ot' my invention; as,

the internal wedge-ring or flange of the pulley, and also that the contact-surfaces of the flanges C O and the wheel-F may readily` separate.

In cases in which the drum, pulley, or vheel, is of large diameter, and used in a vertical position, or when it is essential to convey excessive power, it may be found beneficial to support the conical ringI E E upon a spring or springs of steel or India rubber. In such cases the said spring or'springs may be introduced between the under side of the ring E E and the shoulders ofthe fiangesbr disks C C, immediately beneath tl-e ring, the said shoulders being made of a proper ferm to receive the spring or springs, oracircular ring of India rubber may be employed in place of steel. The object in `using such springs would be to facilitate the gravitation of the conical ring E E, and relieve the flanges of the disks C C from the weight of the said ring, which would have a tendency to rest heavily upon the lower parl. of the said flanges when the drum, pulley, or wheel, is used in a. vertical position, and when the rope leads off at any angle except that of ninety degrees.

The action of a drum, pulley, or wheel, constructed as shown in figs. l, 2, 3, 5, and 6, is caused by the strain ofthe rope or band, pressure of an external pulleyvor wheel, or the weight of a bar, rod, or rail, heilig thrown upon the internal wedge-ring in the re-l cess, and the said ring is then forced against the face or faces of the recess on the opposite side of the drum, pulley, or wheel, thereby forcing apartthe two flanges or disks on that side, and bringing them together on the side next the rope, band, external pulley, or wheel, bar, rod, or rail, as the case may be, which is thereby compressed and held firmly by the two flanges or disks, and ,released as the drum,

The action of a railroad-wheel constructed as shown vnig. 4 is caused by the weight of the engine or car being thrown on the flanges or disks, so as to force them apart upon the upper or top side of the wheel, and toward each other on the side next the rail, which is thereby firmly gripped by the tires of the flanges or disks.

l. am aware that pulleys have been invented, and are already in use, for preventing the slipping of wire ropes, when used for driving purposes, but such pulleys are made by forming several separate nipping-parts, and attaching them; by means ot' short hinges, to and pulley, or wheel, revolves,

and around one or both sides of the periphery of the said pulleys. My mechanism is,however, less costly, more effect-ive, less liable to get out of repair, and produces less wear and tear upon the rope, Aand is, moreover, applicable to a greater number of uses than vthe pulleys just before alluded to.

Having thus described the nature of my invention,

What .[:do claim as new, and desire to secure by Letters Patent, is-

1. Drums, pulleys, nal wedge-shaped ring inserted between two loose flanges or disks, in the manner and for the purposes hereinbefore described. Y

2. Drums, pulleys, or wheels, having a loose internal wedge-shaped ring inserted between two flanges or disks, one of which is loose, and the other keyed or securely fastened to the shaft, in the manner and for the purposes hereinbefore described.

3. Drums, pulleys, or wheels, having an internal wedge-shaped ring keyed to the shaft between two loose flanges or disks, in the manner' and for the purposes hcreinbcfore described.

4. Drums, pulleys, or wheels, having an internal wedge-shaped ring securely' fastened to or cast upon one of the flanges or disks, either thisflange or disk to which the wedgering is attached, or the other one to which -it is not attached, being securely keyed to the shaft, in the manner and for the purposes hereinbefore described.

5. Drums, pulleys, or wheels, constructed as hereinbefore described, to be use d in connection with wire. or other ropes, bands, chains, bars, rods, or rails, .for the purpose of transmitting power, as set forth.

6. lhe combination' of a. clip-pulley, constructed as hereiubefore described, with one or lnore wheels, having one or more properly formed angcs, the whole constituting an improved system of frictional gearing.

7. The above-described mechanism, arranged so as to be applicable to railroad-engine or car-wheels, in

the manner and for the purposes set forth.

London, May 19, 1870.

WM. KELSEY. Witnesses:

H. J. Gulswonn,

' 8 Southampton Buildings. M. WYNN,

24 Royal Exchange, London..

or wheels, haring a loose inter- 

